Mayweather vs. McGregor a Done Deal? Early Betting Odds Report02.14.2017Edit 2/15: Floyd Mayweather released a message on Instagram last night disputing news reports that the fight was agreed to in principle. Online sports betting site Bovada has opened Floyd Mayweather as a -1400 favorite against UFC superstar Conor McGregor. USA Today and other sites are reporting that an agreement was reached, though the Mayweather camp has not made any announcements and a date and venue remain unknown. SBR Forum posters are discussing Mayweather vs. McGregor.